DIASTAGLung Cancer Stage at Diagnosis Study in Non-US, Non-European Countries

This is a multicentric, multinational, observational study to describe the shift in stage at diagnosis of lung cancer over the time- period from baseline year to EOS (end of study). The study will be implemented in the AstraZeneca International Region (ie, non-US, non-European countries). The participating countries and sites will be selected based on the availability and accessibility of secondary data sources such as lung cancer databases or EMR (electronic medical records) in the target countries. Once countries and databases are selected, the protocol will be adapted for the specific country including details about the patient databases. The study will be conducted in compliance with the local legal, ethical, and regulatory requirements of the selected countries. The study-specific data will be extracted from the databases and recorded using eCRF (electronic case report form). This study does not involve direct recruitment of the patients. Aggregated data from the databases for each consecutive year starting from the baseline year until EOS, of patients with lung cancer meeting the inclusion criteria will be included in the study.